Disintegrating mill



Nov. 1 1927. 7 I I V I 1, 47,555

s. n. WELLS VDISIN'IEGRATING MILL" Filed Aug'.26. 1926 2 Sheets-Sheet 2 3 If if 15;? V 1* 0 ar, Z

I I/ Q.

59 e77 e ,IZ

Patented Nov. 1, 1927.

UNITED STATES 1,647,555 PATENT ounce.

SIDNEY D. WELLS, OF QUINCY, ILLINOIS, ASSIGNOR TO PAPER MILL LABORATORIES,

' INC., OF QUINCY, ILLINOIS, A CORPORATION OF ILLINOIS.

DISINTEGRATING MILL.

My invention relates to improvements in apparatus for shredding and disintegrating fibrous material and is especially adapted for beating pulp for paper manufacture or the like, although not necessarily restrlcted to this use.

An important object of my invention is to provide a device of this character which W111 shred by means of impacts imparted to the material to be treated in place of the usual grinding, rubbing or rolling operation.

, Another object of my invention is the provision of a device of this character in which the impacts are increased as the material is reduced.

A further object of my invention is to provide means for insuring .the proper discharge of the reduced material.

A still further object of my invention is the provision of a device of this character which will be compact, simple and efficient.

Other objects and advantages of my invention will be a parent during thetcourse of the following description.

In the accompanying drawings, which form a part of this specification and wherein like characters of reference denote like or corresponding parts throughout the same,

Figure 1 is a perspective view of my improved mill,

Figure 2 is a central longitudinal sectional view thereof.

Figure 3 is a transverse section on the line 3-3 of'Figure 2,

Figure4 is a detail side elevation of one of the hammer supporting disks and the associated hammers, and

Figure 5 is a similar view of another of the disks and associated hammers.

In the drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 10 designates a cylindrical casing having a suit- .able lining 11 arranged therein, and having circumferential flanges 12 at each end to which are secured end plates 13 having depending leg portions 14 which are bent over at their lower ends to form horizontal foot portions 15 which rest upon the base 16 and are secured thereto in any suitable manner.

A centrally arranged shaft 17 extends entirely through the casing 10 and is journaled in suitable bearings 18 which are arranged exteriorly of the casing 10 and are supported by the end walls 13 thereof. One

"end of the shaft 17 is coupled at 19 to the end of an armature shaft 20 of an electric motor 21, although any other means of r0- tating the sl1aft'17 may be used. The motor 21 is supported by legs 22 which rest on a block 23 which is also secured to the base 16.

Spaced disks 24 are keyed to the shaft 17 and hammer elements 25 are pivotally secured between adjacent pairs of disks. The hammer elements 25 .extend radially toward the lining 11 and have their inner ends provided with substantially cylindrical enlargements 26 of a length corresponding-to the space between the adjacent disks. The

enlargements 26 of the hammers are arranged in alignment, and shafts 27 extend through the disks and enlargements 26 and serve to pivotally secure the hammers between the disks. .The outer ends, of the hammer elements are provided with enlarged heads 28 which are arranged immediately adjacent the lining, the adjacent heads being arranged with a very slight space therebetween.

The hammer elements are equally spaced about the disks as shown in Figures 4. and 5. The disks at the intake end of the casing are shown as provided with three hammers, while those near the discharge end are shown as provided with twice that number. The

number is immaterial, but it is desirable to have more hammers at the discharge ,end 1 the hopper into the casing where the revolving hammers reduce and disintegrate it by pounding it against the lining 11. The material is fibrous in nature, and is fed into the casing in a wet condition and is shredded and disintegrated by the impact of the ham: mers. As the material is revolved in the casing it moves longitudinally thereof and is discharged through the opening 30 by centrifugal force. As it nears the discharge opening it is in a more reduced state than when it enters the casin and more impacts are given to it because 0 the increased number of hammers. It will be seen that the action of the hammers disintegrates the material by tearing and pulling it a art rather than by rubbing, rolling or grin ing operation such as is usually employed.

While I have shown the preferred embodiment of my invention, it is to be understood that various changes in the size, shape and arrangement of parts may be resorted to without departing from the spirit of my inventi'on or the scope of the subjoined claims.

Having described my invention, what I claim and desire to protect by Letters Patent is:

1. A disintegrating mill for treating fibrous materials comprising a casing, a feed hopper at-on eend of the casing, a tangential discharge 'at.the other end of the casing, a shaft journaled in said casing and extending longitudinally thereof and means to rotate said shaft, and swinging hammer elements secured to said shaft to revolve therewith and disintegrate the material by a hammering-action as it is fed toward the discharge end L'Qffthe casing, there being more hammers at th'eiidischarge end of the casing than at its intake end, whereby the number of impacts is increased as the material is reduced.

2. A disintegrating mill for treating fibrous materials comprising a casing, a feed hop er at one end of said'casing, a tangential disc arge' at the other end of the casing, a centrally arranged shaft journaled in said casing, means "to revolve the shaft, spaced diskssecured to said shaft and hammer elements pivotally arranged between said disks to revolve therewith and having their ends arranged adjacent the walls of the casing, there being a greater number of hammer elements between the disks adjacent the discharge end of'the casing than between the disks adjacent the other end of the casing whereby the number of impacts imparted to the material is increased as the material is re duced.

3. A disintegrating mill for treatin fibrous material comprising a casing, a feed hopper at one end of the casing, a discharge at the other end of the casing, a shaft journaled in said casing and extending longitudinally thereof, means to rotate said shaft, and hammer elements secured to said shaft to revolve therewith and disintegrate the material by a hammering action as it is fed toward the discharge end ofthe casing, there being more hammers at the discharge end of v the casing than at its intake end, whereby the number of impacts is lncreased as the material is reduced-,the relative weight of the hammers being inversely proportional to their number.

4. A disintegrating rnill for treating fibrous material comprising a casing, a feed hopper at one end of the casing, a discharge at the other end thereof, means within said casing to impart a series of impacts to the material passing through the casing to disintegrate the same and means whereby the number of impacts is increased as the material is reduced, the impacts being lighter as their number is increased;

In testimony whereof I aifix my signature.

\ .SlDNEY 1D. WELLS. 

